The state Assembly has passed a bill limiting full-contact practices for high school football teams, legislation responding to concerns about the long-term effects of head injuries.

AB2127 passed Thursday on a 50-22 vote and now goes to the Senate. It has the support of the California Interscholastic Federation, which oversees high school athletics.

Democratic Assemblyman Ken Cooley of Rancho Cordova says he was motivated by the growing anxiety from parents about the risks associated with concussions.

His bill limits drills involving game-speed tackling to 90-minute sessions twice a week. It also applies to private and charter schools.

The federation says most coaches already abide by similar rules to protect student safety. Republicans and some Democrats voted against the bill, saying the issue is best addressed locally by schools and coaches.